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Title: A fresh look at the use of nonparametric analysis in actimetry
Authors: Gonçalves, B.S.B.
Adamowicz, Taísa
Louzada, Fernando Mazzilli
Moreno, Claudia Roberta
Araujo, John Fontenele
Keywords: Circadian;Functional model;Sleep;Fragmentation;Synchronization;Amplitude;Rest-activity
Issue Date: Apr-2015
Citation: GONÇALVES, B. S. B. et al. A fresh look at the use of nonparametric analysis in actimetry. Sleep Medicine Reviews, v. 20, p. 84-91, 2015. ISSN 1532-2955. Disponível em: <>. Acesso em: 19 jun. 2018.
Portuguese Abstract: Actimetry has been used to estimate the sleep–wake cycle instead of the rest-activity rhythm. Although algorithms for assessing sleep from actimetry data exist, it is useful to analyze the rest-activity rhythm using nonparametric methods. This would then allow rest-activity rhythm stability, fragmentation and amplitude to be quantified. In addition, sleep and wakefulness efficiency can be quantified separately. These variables have been used in studies analyzing the effect of age, diseases and their respective treatments on human circadian rhythmicity. In this study, we carried out a comprehensive analysis of the main results from published articles and devised a functional model of interaction among the several components involved in generating the sleep–wake cycle. The nonparametric variables render it possible to infer the main characteristics of circadian rhythms, such as synchronization with a zeitgeber, and its amplitude and robustness
ISSN: 1532-2955
Appears in Collections:CB - DFIS - Artigos publicados em periódicos

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